[Tizen] Backport tizen_7.5 for Scene3D

[Tizen] Backport tizen_7.5 for Scene3D

This is a combination of 4 commits.

Fix deadlock issue of AsyncTaskThread

mDestroyThread may be changed to true after while(!mDestroyThread)
because we don't lock the part.

Support to load an image from uint8_t* encoded buffer.

Fix coverity issue : Adaptor available check in async task manager

Add GetCallbackInvocationThread() for AsyncTaskMananager

When AsyncTaskManager use other thread, no need to wake up main thread.

Change-Id: I17cf6d123304e5bef991afdd692dd25222ceace7
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>